Pressure-casting apparatus



Feb.

s. BRUSA PRESSURE CASTING APPARATUS Filed Sept. 16, 1920k Patented Feb.13, 1923.

SILVIO BRUSA, OIE MILAN,.ITALY.

PRESSURE-CASTING APPARATUS.

Application led September 16, 1920.

1/ Yo l 'whom t may concern.'

Be it known that I, SILVIO Bauen, a sub- `ject of the King of Italy, anda resident of Milan, Italy, have invented certain new and usefulImprovements in Pressure-Casting Apparatus, for which I iled anapplication in Italy, June 7', 1919, of which the following is aspecification.

The present invention relates to a new or improved means for running offmetals into a mould or into a shell. According to the invention themetal is not run olf by tilting the crucible or melting pot, but byremoving the liquid vmetal from the Crucible to the mould or to theshell, by means of gas, oil,

or other fluid under pressure.

To more fully comprehend the invention, reference is directed to theaccompanying drawing, wherein the ligure shows one construction ofapparatus for carrying the invention into effect.

In the Crucible or melting pot 1, and consequently in the liquid metalcontained therein, is immersed until it rests 0n the bottom a bent pipe2 of refractory material. Another pipe 3 connects one of the'ends ot thepipe 2 to a vessel 4c containing air, gas,

or other suitable fluid under pressure, the fluid varying according tothe metal employed.

rlhe other end of the pipe 2 is formed with a conical seating 5 intowhich can be inserted the conical end G of a pipe 7 slidable in the hole8 provided in the support 9.

The pipe 7 is maintained in raised position by a counterweight 10provided on the end of a lever 11 pivoted at 12. Under these conditionsthe liquid metal fills the bent pipe 2.

Serial No. 410,636.

When it is desired to run off the metal, the parts 13, 13 of the shellor mould mounted on the blocks 14, 14 of thelevers 15, 15 are broughttogether, these levers being connected by a hinge 16 embracing the pivot17.

.This having been accomplished the inclined plane 18 is caused to slideon the upper part of the pipe 7 until the lever 15 rests against theabutment 20. In this position the bore of the pipe 7 registers with themouth of the shell. If then the cock 22 inserted in the pipe 3 isopened, the air or otherlfluid under pressure will pass into the pipe 2and :torce the liquid metal into the shell through the bore 21 of thepipe 7.

The metal thus discharged rapidly fills all the interstices of the shellor mould and thus a perfect casting isobtained.

TWhat I claim is:

4A crucible or the like; a pipe having' a discharge end arranged in theCrucible for immersion in molten metal, means to force gas and hencealso molten metal through said pipe, a support, a pipe mounted forvertical movement in the support and arranged, when lowered, to closeits lower end in the discharge opening of the first-named pipe, a mold,a carrier element for the mold, including a cam to depress the secondnamed pipo and cause the mouth 0f the mold to register with said pipewhen the carrier element is moved in one direction, and means to raisesaid pipe and thereby disconnect the same from the irst-named pipe, whenthe carrier element moves the mold out of registry with the second namedpipe.

In witness whereof I ailix my signature.

vsiLvio BRUsA.

